6International Union of Railways. UIC510-2-2004 Trailing stock: wheels and wheelsets. Conditions concerning the use of wheels of various diameters [ M ]. 4th ed, Paris:In- ternational Union of Railways,2004.
7International Union of Railways. UIC518-2005 Testing and approval of railway vehicles from the point of view of their dynamic behaviour - Safety - Track fatigue - Ride quality [ M ]. 3rd ed, Paris : International Union of Railways ,2005.
